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International LeagueLiam Hendriks, Rochester(2-0, 0.00 ERA, 2 G, 2 GS, 1 CG, 1 SHO, 15 2/3 IP, 7 H, 0 R, 0 ER, 0 HR, 0 HBP, 3 BB, 18 K)
Hendriks, the Twins' No. 7 prospect, began the season in the Minnesota rotation but struggled to a 9.00 ERA and .390 average against in four starts before being optioned to Rochester. With the exception of a rough outing in Charlotte on May 30, the Australian right-hander has been lights-out for the Red Wings, going 5-0 with a 1.94 ERA in seven starts. This week he held Columbus to four hits while fanning eight over seven scoreless frames Monday, then tossed 8 2/3 scoreless innings at first-place Indianapolis on Saturday, striking out a season-high 10 batters. The extra work in Triple-A has paid off, as Hendriks may be recalled to Minnesota to start against the Brewers on Saturday.Hendriks gets Marte swingingTop prospects: Liam Hendriks

Pacific Coast LeagueGraham Godfrey, Sacramento(2-0, 0.64 ERA, 2 G, 2 GS, 14 IP, 5 H, 1 R, 1 ER, 0 HR, 1 HBP, 3 BB, 11 K)
While Godfrey has been ineffective in the National League (where he is 0-4 with a 6.43 ERA in five games), he has been lights-out in the PCL, where his 1.05 ERA is 1.81 runs better than second-place Joe Kelly of Memphis. The 27-year-old right-hander won both of his starts this week, allowing one run on five hits over 14 innings to earn his second PCL Pitcher of the Week award. Godfrey has surrendered more than one run in just one of his eight Triple-A outings this season.

Eastern LeagueDrake Britton, Portland(1-0, 0.00 ERA, 2 G, 2 GS, 10 1/3 IP, 3 H, 0 R, 0 ER, 0 HR, 0 HBP, 8 BB, 7 K)
After a miserable start to 2012 that saw him allow 19 earned runs over 12 1/3 innings in his first three outings, the left-handed Britton showed signs of improvement in May. The 23-year-old earned Carolina League Player of the Week honors with six scoreless innings at Lynchburg on May 30, prompting the Red Sox to promote their No. 13 prospect to Double-A Portland. The move was an immediate success, as Britton tossed five no-hit frames (albeit while walking six) in his Eastern League debut on Tuesday. The Texas native held Richmond to three hits over 5 1/3 scoreless innings Sunday and has now held EL hitters to a .083 mark (3-for-36) in his first two starts.Top prospects: Drake Britton

Texas LeagueDan Straily, Midland(1-0, 0.69 ERA, 2 G, 2 GS, 13 IP, 10 H, 1 R, 1 ER, 1 HR, 2 HBP, 1 BB, 20 K)
Straily has always missed bats -- he entered the season with 369 strikeouts in 368 1/3 Minor League innings and was third in the A's system with 154 last year -- but the 23-year-old right-hander is fanning hitters at a torrid pace in 2012. He struck out 15 Corpus Christi Hooks back on May 18 and this week broke into double digits again with 11 K's against Tulsa on Monday before fanning nine more at first-place Frisco on Sunday. Straily ranks second in the Minor Leagues with 99 strikeouts on the season -- three fewer than Reno's Trevor Bauer and 28 more than Arkansas' Ariel Pena, who is second in the Texas League.Straily strikes out side for RockHounds

California LeagueSean Murphy, Stockton(1-0, 0.00 ERA, 1 G, 1 GS, 6 1/3 IP, 3 H, 0 R, 0 ER, 0 HR, 0 HBP, 1 BB, 10 K)
Murphy began the 2012 campaign with Class A Burlington, where he had posted a 6.33 ERA in 15 games last season. This year was very different, as the 6-foot-6 right-hander held Midwest League hitters to a .197 average while compiling a 1.97 ERA in eight starts. He's been even better in California, going 3-1 with 28 strikeouts over 27 frames in his first four outings. On Friday night the 23-year-old Murphy fanned 10 San Jose Giants while allowing three hits in 6 1/3 scoreless innings. Murphy's 80 strikeouts (in 77 1/3 innings) overall are tied for 11th-most in the Minors this season.Ports' Murphy fans his tenth batter

Carolina LeagueMatt Barnes, Salem(2-0, 0.00 ERA, 2 G, 2 GS, 1 CG, 1 SHO, 13 IP, 9 H, 0 R, 0 ER, 0 HR, 0 HBP, 4 BB, 8 K)
The 19th overall pick in last year's Draft, Barnes burst upon the scene by striking out 42 batters over 26 2/3 innings with Greenville in his first five pro outings. Things have been a little more difficult for the 21-year-old Connecticut product in the Carolina League but not by much: he owns a 1.32 ERA and a .211 average against in seven starts. This week the No. 5 Red Sox prospect tossed six scoreless innings against Winston-Salem on Monday before notching his first career shutout in the seven-frame opening game of Salem's doubleheader at Potomac on Saturday. After 12 pro games, Barnes has 86 strikeouts -- fourth-most in the Minor Leagues -- while walking just 11.Top prospects: Matt Barnes

Florida State LeagueShane Greene, Tampa(1-0, 0.00 ERA, 1 G, 1 GS, 6 IP, 0 H, 0 R, 0 ER, 0 HR, 0 HBP, 0 BB, 8 K)
After being blasted for nine earned runs over 7 2/3 innings in two early-May starts, Greene returned to the Tampa rotation in top form last weekend. The 23-year-old right-hander struck out six over four scoreless innings last Sunday before pitching six perfect frames against Daytona on Saturday night. Greene fanned a season-high eight to earn his first victory of the season in the Yankees' 7-0 win.

Midwest LeagueKyler Burke, Peoria(1-0, 0.00 ERA, 1 G, 1 GS, 7 IP, 2 H, 0 R, 0 ER, 0 HR, 0 HBP, 0 BB, 9 K)
Burke began the season in the Peoria bullpen, but joined the Chiefs rotation shortly after turning 24 on April 20. While he was solid in relief, the southpaw -- who spent five years as an outfielder (and hit .303/.405/.505 for Peoria in 2009) before turning to pitching -- has been even better as a starter. Burke produced the best (and longest) outing of his career on Saturday, striking out a career-high nine batters while allowing two hits over seven scoreless frames in the Chiefs' 4-1 win over Kane County. The 2006 first-round pick now sports a 2.42 ERA in 111 2/3 Minor League innings.

South Atlantic LeagueKyle Crick, Augusta(1-0, 0.00 ERA, 1 G, 1 GS, 7 IP, 1 H, 0 R, 0 ER, 0 HR, 0 HBP, 1 BB, 10 K)
An impressive fastball made Crick the 49th overall pick in the 2011 Draft (and the Giants' No. 15 prospect) despite his relative inexperience on the mound -- he didn't concentrate on baseball, let alone pitching, until his junior season of high school. The 19-year-old's brief pro career has largely consisted of honing his secondary pitches and developing his command. The work, particularly on his changeup, paid off brilliantly Thursday as Crick held first-place Greensboro to one hit over a career-high seven shutout innings. His 10 strikeouts were also a personal best.Top prospects: Kyle Crick

John Parker is a contributor to MLB.com. This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.